Three sentences are given. You need to find if they are grammatically correct or incorrect and mark the answer accordingly.

(P) He might be able to tell you what happened in a story, but can't explain why events went the way they did.

(Q) He doesn't link events in a book to similar events from another book or from real life.

(R) He do not go behind what is presented in a book to think about what might happen next or why characters took the action they did.